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.256 Win. Mag.
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Caliber Specifications:
Caliber: | .256 Win. Mag. |
Standard / Datasheet: | C.I.P. |
Bullet Diameter: | 0.256" | 6.50mm |
Primer Size: | Large Rifle (LR) |
Max. Case Length: | 1.281" | 32.54mm |
Max. Cartridge Length / OAL: | 1.590" | 40.39mm |
Max. Standardized Pressure: | 50763 psi | 3500 bar |
Case Capacity: | 22.0 Grains of Water | 1.43 cm3 |
CID: | CID_233 |
Last updated: | 2/20/2025 |
- The .256 Win. Mag. is a powerful, yet highly controllable cartridge developed by Winchester in the late 1960s. It is based on a necked-down .357 Magnum case and uses a 9mm (.358) bullet, making it an ideal all-around option for those looking for accuracy and stopping power at the same time.The .256 Win. Mag.'s flat trajectory and low recoil make it a great choice for both hunting and target shooting. Its high velocity also gives it excellent accuracy out to long distances, with some shooters reporting one-inch groups at 400 yards! When it comes to hunting medium game animals such as deer and antelope, the .256 Win. Mag. can do the job with ease thanks to its light but powerful bullets and deep penetration ability.
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Most popular powders from our community members for caliber .256 Win. Mag.:
Weight vs. Velocity - Suitable Bullets for this Caliber
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Barrel Length Variation vs. Velocity - by Bullet Weight
.256 Win. Mag. load data available with the following bullets:
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